Title:
PROJECTION DISPLAY AND SPECKLE REDUCTION ELEMENT
Document Type and Number:
WIPO Patent Application WO/2007/116935
Kind Code:
A1
Abstract:
A projection display which is miniaturized, enhances reliability and reduces
speckle noise. A blue laser (1), a red laser (2) and a green laser (3) emit blue laser
light, red laser light and green laser light, respectively, a spatial light modulation
element (14) modulates blue laser light, red laser light and green laser light
emitted from the blue laser (1), a red laser (2) and a green laser (3), a projection
lens (15) projects light modulated by the spatial light modulation element (14)
to a screen, and first and second diffusion elements (8, 9), arranged along the
optical axis between the spatial light modulation element (14) and the blue laser
(1), the red laser (2) and the green laser (3), varies the degrees of diffusion
of the blue laser light, red laser light and green laser light temporally and electrically.
Inventors:
ITOH, Tatsuo (())
伊藤 達男 (())
MIZUSHIMA, Tetsuro (())
伊藤 達男 (())
MIZUSHIMA, Tetsuro (())
Application Number:
JP2007/057656
Publication Date:
October 18, 2007
Filing Date:
April 05, 2007
Export Citation:
Assignee:
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1006, Oaza KadomaKadoma-shi, Osaka 01, 5718501, JP)
松下電器産業株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 5718501, JP)
ITOH, Tatsuo (())
伊藤 達男 (())
松下電器産業株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 5718501, JP)
ITOH, Tatsuo (())
伊藤 達男 (())
International Classes:
G03B21/00; G02F1/13; G02F1/1334; G03B21/00; G02F1/13
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (Nichimen Building 2nd Floor, 2-2 Nakanoshima 2-chome, Kita-k, Osaka-shi Osaka 05, 5300005, JP)
Download PDF:
Previous Patent: RECEIVING DEVICE AND ELECTRONIC DEVICE USING SAME
Next Patent: METHOD OF SMELTING HIGHLY CLEAN STEEL WITH EXTREMELY LOW SULFUR CONTENT
Next Patent: METHOD OF SMELTING HIGHLY CLEAN STEEL WITH EXTREMELY LOW SULFUR CONTENT